Decay processes of highly excited states
including unimolecular
reaction dynamics, Rydberg state collisions and reactions,
field-ionization dynamics, ion-molecule reactions, and the
mode dependence of decay processes in larger molecules.

Techniques of X-ray physics including
spectroscopy,
microimaging, and microtomography, and their applications,
particularly in the area understanding processes occurring in
complex, heterogeneous media.